Torque wrench structure capable of correcting torsion
By setting a force release unit and an electromagnet at the end of the wrench body, combining articulation and dustproof sleeves, the problem of unadjustable maximum torque and low accuracy of the existing wrench is solved, and instantaneous disengagement and high-precision operation of the wrench after setting torque is achieved.
Patent Information
- Application Number
- CN202421117693.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing torque wrench cannot adjust the maximum torque when applying torque, and it is prone to damage the screw due to excessive torque. The magnetic force of the electromagnet is affected by dust and water mist, so the accuracy is not high.
A torque wrench structure that can correct torque is designed, by providing a force-removing unit at the end of the wrench body, maximum force adjustment is achieved using an electromagnetic and a slide rod, and device accuracy is improved through articulation and dustproof sleeves.
It realizes instantaneous disengagement after reaching the set torque, avoids screw damage, and improves the accuracy of the device through the dustproof sleeve to ensure high-precision operation of the wrench.
Smart Images
Figure CN222244569U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transfer tools, in particular to a torque wrench structure capable of correcting torque. Background Art
[0002] A torque wrench is also called a torque wrench. When the tightness of screws and bolts is critical, the use of a torque wrench allows the operator to apply a specific torque value.
[0003] At present, a utility model patent with announcement number CN216152222U discloses a bidirectional linked torque wrench, including a middle shell, a cover is clamped on the inner side of the upper end of the middle shell, a fixed shell is clamped on the lower side of the cover, a pressure rod is arranged inside the fixed shell, a spring is sleeved on the outer side of the pressure rod, a first bite column is sleeved on the bottom end of the fixed shell, a second bite column is meshingly connected to one side of the first bite column, the bottom end of the pressure rod is fittedly connected to one end of the transmission block, a magnet is arranged inside the transmission block, the magnet is used for magnetically connecting a screwdriver, the screwdriver extends out of the lower cover, the top end of the pressure rod is inserted into the interior of the cover, a mounting hole is opened inside the middle shell, and the fixed shell is placed inside the mounting hole. When the wrench is in use, the upper cover is rotated to drive the first bite column and then the screwdriver to rotate. When the torque of the screwdriver during rotation is greater than the bite force between the first bite column and the second bite column, the first bite column overcomes the elastic tension of the spring and moves upward to allow the first bite column to rotate relative to the second bite column, so as to prevent the surface of the screw from being scratched due to excessive torque and to avoid damage to the screw. The above-mentioned spring is clamped between the positioning block and the cover, the preload force of the spring is fixed, and the maximum torque of the screwdriver is fixed and cannot be adjusted. Utility Model Content
[0004] The utility model aims to provide a torque wrench structure capable of correcting torque, so as to solve the problems existing in the above-mentioned prior art.
[0005] The above technical objectives of the utility model are achieved through the following technical solutions:
[0006] A torque wrench structure capable of correcting torque comprises a wrench body and a force relief unit arranged at the end of the wrench body, the force relief unit being hingedly fixed to the wrench body, a receiving groove being arranged on a side of the wrench body close to the force relief unit, a sliding rod being slidably installed in the receiving groove, a cover plate for closing the receiving groove being arranged in the receiving groove, a through hole being arranged at the center of the cover plate, the sliding rod being arranged with an extension end passing through the through hole and being located outside the receiving groove, an electromagnet corresponding to the extension end of the sliding rod being arranged at one end of the force relief unit close to the wrench body, an angle limiter being arranged at the hinge between the wrench body and the force relief unit, a pressure sensor being arranged at one end of the sliding rod located inside the receiving groove, and the pressure sensor being in contact with the surface of the cover plate.
[0007] By adopting the above technical solution, the maximum force applied by the release unit to the wrench body can be adjusted by adjusting the suction force of the electromagnet, thereby achieving the effect of instantaneous release after reaching the set torque.
[0008] In a further embodiment, an energy storage unit is disposed inside the force-relieving unit, a charging socket electrically connected to the energy storage unit is disposed on the outside of the force-relieving unit, the energy storage unit is electrically connected to the electromagnet through a control module, and the control module is embedded in the force-relieving unit.
[0009] In a further embodiment, a plurality of magnetic sockets are provided on the wrench body, a sensor is provided inside each of the magnetic sockets, an identifier is provided inside the force relief unit, a current controller is provided inside the force relief unit, and a display screen for human-computer interaction is provided on the surface of the force relief unit.
[0010] In a further embodiment, a dustproof sleeve is provided at a hinge between the wrench body and the force-relieving unit, one end of the dustproof sleeve is sleeved on the wrench body, and the other end of the dustproof sleeve is sleeved on the force-relieving unit.
[0011] In a further embodiment, a buffer block is provided on a side of the wrench body close to the force-relieving unit.
[0012] In a further embodiment, the de-force unit comprises a hollow cylindrical shell and an anti-slip sleeve arranged on the outer side of the shell.
[0013] In summary, the utility model has the following beneficial effects:
[0014] 1. The force-releasing unit is hingedly fixed to the wrench body, and an electromagnet corresponding to the extended end of the slide rod is arranged at one end of the force-releasing unit close to the wrench body, so that the suction force of the electromagnet can be adjusted to adjust the maximum force applied by the force-releasing unit to the wrench body, thereby achieving the effect of instantaneous detachment after reaching the set torque;
[0015] 2. A dustproof sleeve is provided at the hinge between the wrench body and the de-force unit, which can prevent dust and water mist from invading the electromagnet and affecting the magnetic force of the electromagnet to adsorb the sliding rod. This setting has the effect of making the device more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the matching relationship between the slide bar and the electromagnet of the utility model.
[0018] In the figure, 1. wrench body; 2. release unit; 3. slide bar; 4. electromagnet; 5. pressure sensor; 6. energy storage unit; 7. control module. DETAILED DESCRIPTION
[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0020] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1 In the description of this specification, the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from a particular component geometry, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this specification, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0021] Embodiment 1:
[0022] like Figure 1-2 As shown, a torque wrench structure capable of correcting torque comprises a wrench body 1 and a force release unit 2 arranged at the end of the wrench body 1, the force release unit 2 is hingedly fixed to the wrench body 1, a receiving groove is arranged on one side of the wrench body 1 close to the force release unit 2, a slide rod 3 is slidably installed in the receiving groove, a cover plate for closing the receiving groove is arranged in the receiving groove, a through hole is arranged at the center of the cover plate, the slide rod 3 is arranged with an extended end passing through the through hole and located outside the receiving groove, an end of the force release unit 2 close to the wrench body 1 is arranged with an electromagnet 4 corresponding to the extended end of the slide rod 3, an angle limiter is arranged at the hinge of the wrench body 1 and the force release unit 2, and the slide rod A pressure sensor 5 is arranged at one end of the receiving groove, and the pressure sensor 5 is in contact with the surface of the cover plate. An energy storage unit 6 is arranged inside the force-releasing unit 2, and a charging socket electrically connected to the energy storage unit 6 is arranged on the outside of the force-releasing unit 2. The energy storage unit 6 is electrically connected to the electromagnet 4 through a control module 7, and the control module 7 is embedded in the force-releasing unit 2. A plurality of magnetic suction sockets are arranged on the wrench body 1, and a sensor is arranged inside each magnetic suction socket. An identifier is arranged inside the force-releasing unit 2, and a current controller is arranged inside the force-releasing unit 2. A display screen for human-computer interaction is arranged on the surface of the force-releasing unit 2.
[0023] like Figure 1-2As shown, a dustproof sleeve is provided at the hinge of the wrench body 1 and the force-relieving unit 2, one end of the dustproof sleeve is sleeved on the wrench body 1, and the other end of the dustproof sleeve is sleeved on the force-relieving unit 2. A buffer block is provided on the side of the wrench body 1 close to the force-relieving unit 2, and the force-relieving unit 2 includes a hollow cylindrical outer shell and an anti-slip sleeve arranged on the outer side of the outer shell.
[0024] Specific implementation process: the force-releasing unit is hingedly fixed to the wrench body, and an electromagnet corresponding to the extended end of the slide bar is arranged at one end of the force-releasing unit close to the wrench body, which can adjust the suction force of the electromagnet and the maximum force applied by the force-releasing unit to the wrench body, thereby achieving the effect of instantaneous separation after reaching the set torque. During use, the current of the electromagnet is adjusted to control the magnetic attraction of the electromagnet to the slide bar. When the magnetic attraction range is reached, the wrench body and the force-releasing unit change at the hinge. At this time, the electromagnet is separated from the slide bar, and the buffer block absorbs kinetic energy to avoid the wrench itself. The sudden large angle change between the body and the release unit causes the personnel's center of gravity to become unbalanced. Since the torque wrench applies torque in one direction, it is only necessary to pull the release unit and the side of the internal stress of the wrench body that is under tension through the sliding rod and the electromagnet to achieve the out-of-range release situation. The dust cover is used to prevent dust from entering the contact surface between the sliding rod and the electromagnet, which may cause inaccurate calculations. The angle limiter can limit the rotation correction of the wrench body and the release unit to avoid the problem of misalignment between the sliding rod and the electromagnet during the resetting process caused by the rotation angle deviation, and the cross-sectional area of the electromagnet of this device is larger than that of the sliding rod.
[0025] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.
[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A torque wrench structure capable of correcting torque, characterized in that: The invention comprises a wrench body (1) and a force-relieving unit (2) arranged at the end of the wrench body (1), wherein the force-relieving unit (2) is hingedly fixed to the wrench body (1), a receiving groove is arranged on one side of the wrench body (1) close to the force-relieving unit (2), a slide rod (3) is slidably installed in the receiving groove, a cover plate for closing the receiving groove is arranged in the receiving groove, a through hole is arranged at the center of the cover plate, the slide rod (3) is provided with an extension end passing through the through hole and located outside the receiving groove, an electromagnet (4) corresponding to the extension end of the slide rod (3) is arranged at one end of the force-relieving unit (2) close to the wrench body (1), an angle limiter is arranged at the hinge of the wrench body (1) and the force-relieving unit (2), a pressure sensor (5) is arranged at one end of the slide rod (3) located inside the receiving groove, and the pressure sensor (5) is in contact with the surface of the cover plate.
2. A torque wrench structure capable of correcting torque according to claim 1, characterized in that: An energy storage unit (6) is arranged inside the force-relieving unit (2), and a charging socket electrically connected to the energy storage unit (6) is arranged on the outside of the force-relieving unit (2). The energy storage unit (6) is electrically connected to the electromagnet (4) via a control module (7), and the control module (7) is embedded inside the force-relieving unit (2).
3. A torque wrench structure capable of correcting torque according to claim 1, characterized in that: The wrench body (1) is provided with a plurality of magnetic sockets, each of which is provided with a sensor, the force-releasing unit (2) is provided with an identifier, the force-releasing unit (2) is provided with a current controller, and the surface of the force-releasing unit (2) is provided with a display screen for human-computer interaction.
4. A torque wrench structure capable of correcting torque according to claim 1, characterized in that: A dustproof sleeve is provided at the hinged portion between the wrench body (1) and the force-relieving unit (2); one end of the dustproof sleeve is sleeved on the wrench body (1), and the other end of the dustproof sleeve is sleeved on the force-relieving unit (2).
5. A torque wrench structure capable of correcting torque according to claim 1, characterized in that: A buffer block is provided on one side of the wrench body (1) close to the force-relieving unit (2).
6. A torque wrench structure capable of correcting torque according to claim 1, characterized in that: The de-stressing unit (2) comprises a hollow cylindrical outer shell and an anti-slip sleeve arranged on the outer side of the outer shell.